@o_lampe Thank you for your email.
To the consideration of the z axis,
the trident has very sturdy xycore mechanisms and whole hotend with extruder and z axis weight about 611g.
Also with 5 axis movement there will be no need for rapid movement of X and y axis.
When I tested printing with normal 3 axis slicer it may look wobbly but the prints came out nice.
I am using in this way the 6hc board with a full potential with stepper motors.
When I have been designing the hotend from mainly used parts what I had lying around so that is the result of it.
But in the future if the problem become with the stability, is already on my mind to design a new version of the z axis mechanism with two linear rails and lead screw for the z axis stepper motor and maybe liquid cooling for the hotend.
The main goal is to make the hotend available for maximum movement and reach around the rotary bed.